Method of and apparatus for forming self-lubricating bearings.



H. J. SEVEL. METHOD OF AND APPARATUS FOR FORMING SELF LUBRCATINGBEARINGS.

APPLICATION FILED FEB. 29. I916, 1,200,245, Patented Oct 3,1916.

2 SHEETS-SHEET 1'.

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METHOD OF AND APPARAUJS-EOR FORMING SELF LUBRICATING BEARINGS.

I APPLICATION FILED FEB. 29, 291-6. 1,200,245.

Patented Oct. 3, 1916.

2 SHEETS-SHEET 2 J m/1y 5606i,

srnrnm OFFICE.

HARRY J. SEVEL, F GLENDALE, PENNSYLVANIA.

To all whom it may concern Be it known that I, HARRY J. SEVEL, a c1t1-zen of the United States of America, residing at 237 Car-others avenue,Glendale, in the county ofAllegheny and State of Pennsylvania, haveinvented certain new and useful Improvements in Methods of and Apparatusfor Forming Self-Lubricating Bearings, of which the following is aspecification.

This invention relates to a method of and apparatus for formingself-lubricating bearm s.

Tt has heretofore been proposed to form bearings of Babbittor othermetals and-to incorporate thereinf inse'rts of graphite or otherlubrcating material to thereby render the bearing self-lubricating.

he present invention relates more particularly to an improved method andapparatus for forming bearings of this nature.

Further objects and advantages of the invention will be set forth in thedetailed description which now follows:

In the accompanying drawings: Flgure 1 is a side view of a hearing atone end of the connecting rod with the end of the connecting rod partlybroken away; Fig. 2 'is a perspective view of a half-bearing 80 adaptedfor use in many locations; Fig. 3 is a plan view of the mold and thecore with the several parts in assembled position; Fig. 4. is a verticalsectional view through the structure shown in Fig. 3; Fig. 5 is a detailperspective view of the core; Fig. 6 is a side view, and Fig. 7 is aplan view of the base of the mold; Fig. Sis a perspective view of one ofthe graphite inserts; Fig.- 9 is a view similar to Fig. 3 but showingthe mannerin which a half-bearing is formed.

Like numerals designate corresponding parts in all of the figures of thedrawing.

The apparatus employed in forming a bearing in accordance with myimproved method consists of a core 5 and a mold which comprises a base 6and separable halves 7 and 8. The core 5 may taper slightly toward itsupper end and it is provided with any desirable number of longitudinallyextending dove-tailed recesses 9. These recesses receive the dove-tailedribs 10 of lubricating inserts 11 preferably formed in blocks shaped asshown in Fig. 8. These inserts comprise dove-tailed body portions 12which, when the core 5 is placed in theposition illustrated in Fig. 4:,project into the. space be- Specification of Letters Patent.

Patented Oct. 3, 1916.

Application filed February 29, 1916. Serial N 0. 81,148.

tween the outer face of the core and the inner face of the mold sectionsand 8. It

is embraced by the mold sections 7 and 8 and by which the mold sectionsare held in centered and spaced relation to the core 5. The moldsections are clamped together by any suitable fastening devices such asnuts and bolts indicated at 16. The material such core and the innerface of the mold sections and closely engages the dove-tailed bodyportions 1520f the inserts 11. The Babbittmetal is indicated at 17 inFigs. 1 and 4. There-are two principal forms of bearin s in use. One ofthese forms is illustrated in Fig. 1, and in this form the Babbitt metalcontaining the inserts 11 is clamped between the halves 18 and 19 of thebearing end of a connecting rod and these halves 18 and 19 have flanges,one of which is indicated at 20, which overlap the ends of the Babbittmetal 17. Therefore in this form of bearing the inserts 11 may be formedto extend to the end of the Babbitt metal. An-

other form of bearing commonly employed is that illustrated in Fig. 2wherein the Babbitt metal 17 is itself provided with flanges 17 and inmakinga bearing of this ty e I preferably make the blocks-shown in Fig.8 to of such length that the inserts 11 terminate short of the ends ofthe Babbitt metal. the bearing has been cast the mold sections 7 and 8are removed and the core 5 is withdrawn from the bearing. This leavesthe ribs 10 projecting into the bore that is to receive the shaft and toremove these ribs I pass 'a drill of the proper size through said boreto cut away these ribs and bring the surfaces of the inserts flush withthe bearing surface 109 of the Babbitt metal, as illustrated in Figs. 1and 2. 1 i

It is to be understood that the number of inserts and their size withrelation to the diameter of the hearing may be varied at 1 will,because-in the case of heavy duty, slowly moving engines, it isdesirable to have more bearing surface of Babbitt metal and fewerinserts than in the case of high speed engines wherethe load is compara-3Z3 'tively light." In the latter case less bearing surface and morelubricating surface is dei is closed by a plate 5" the body portions'shown' in Fig.

aireds' Fi i. l shows a construction adapted to term a halt hearing. Inthis case only one of the mold sections, here designated as 7, isemployed, together with a semi-circular core 5. The open side of themold section otherwise the operation is the same as that hereinheforeset forth.

I extend the ribs 10 of inserts 11 beyond of the inserts, as in Fig. 8,when forming hearings like those ing the Babbitt metal from entering andfilling the grooves of the core.

it is to he llndtll'b'tOOCl that the invention is not limited to theprecise eonstruetion set forth but that it inci':

1 within its purview such changes as tan-i eme within the scope ot theappended r because as far as I know am the first to employ a. core pr0-vided with means for detaehahly su 'q orting luhrieatinginserts of thisnature.

Having deeeril'ied my irwention claim is:

i. he herein deaeribed method of Casting lavaring with lul'irieatinginsert-s which s; of stmportinp; the lubricating inwhat 1 2, for thepurpose of prevent-.

Serts slidahly upon a euro within a mold, casting the metal of thehearing about said inserts, withr'lrawing the core and leaving the partsof the inserts which were engaged. with said core projecting into thebore of the bearing and then cutting said projecting parts oif flushwith the bearing face of the bearing.

2. An apparatus for forming bearings with lubricating inserts whichconsists of mold parts, a core and means for supporting said eore centally within said mold parts, said (ore having lonfgitudinalh extendingg1O0\O formed in its outer face and which grooves extend to one end ofsaid core.

3. An apparatus for forming bearings with lubricating inserts whichconsists of mold parts, a (ore and means for supporting said corecentrally within said mold parts, said (core having: longitudinallyextending dove-tailed grooves Formed in its outer face and whichdove-tailed grooves extend to one end of said core.

in test mony whereof I a llix my signature in presence oli twowitnesses.

